255
Special operation and frequency control
(5) PID automatic switchover control
(Pr. 127)
The system can be started up without PID control only at a start.
When the frequency is set to
Pr. 127 PID control automatic switchover frequency
within the range 0 to 400Hz, the inverter
starts up without PID control from a start until output frequency is reached to the set frequency of
Pr. 127
, and then it shifts
to PID control. Once the system has entered PID control operation, it continues PID control even if the output frequency
falls to or below
Pr. 127
.
(6) Selecting operation to be performed at the output of Upper limit signal, Lower limit signal, and PID
deviation limit signal (FUP signal, FDN signal, Y48 signal,
Pr.554
)
You can select the operation to be performed at the detection of upper, lower and deviation limit for the measured
value input. With
Pr. 554 PID signal operation selection
, signal output or signal alarm stop (E.PID) can be
selected for each of upper limit output signal (FUP signal), lower limit output signal (FDN signal), and PID
deviation limit signal (Y48 signal).
NOTE
Changing the terminal function using any of
Pr. 178 to Pr. 182, Pr. 190 and Pr. 192
may affect the other functions.
Set parameters after confirming the function of each terminal.
When the
Pr. 267
setting was changed, check the voltage/current input switch setting. Different setting may cause a
fault, failure or malfunction. (
for setting)
Make sure to perform calibration after changing the voltage/current input signal assigned to the terminal 4 with
Pr. 267
setting and the voltage/current input switchover.
Pr. 554 Setting
FUP Signal, FDN Signal *
Y48 Signal *
SLEEP Function
0 (Initial value)
Only signal output
Only signal output
Motor coasts to a stop at the
start of SLEEP operation
1
Signal stop by fault (E.PID)
2
Only signal output
Signal stop by fault
(E.PID)
3
Signal stop by fault (E.PID)
10
Only signal output
Only signal output
Motor decelerates to a stop at
the start of SLEEP operation
11
Signal stop by fault (E.PID)
12
Only signal output
Signal stop by fault
(E.PID)
13
Signal stop by fault (E.PID)
* When the settings for
Pr. 131 PID upper limit
,
Pr. 132 PID lower limit
, and
Pr. 553 PID deviation limit
, which corresponds with FUP, FDN, and Y48 signals,
are "9999" (no function), the signal is not output, or the alarm stop is not performed.
Output frequency
Pr. 127
STF
Time
PID
Without
PID control
PID control
Summary of Contents for FR-F700PJ Series
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